Answer:
20-to-24- year-old women spend 55 minutes and men spend 27 minutes on grooming
Step-by-step explanation:
let x is the average time of 20-to-24- year-old women
y is the average time of men.
The sum of the average times spent on grooming for 20-to-24- year-old women and men is 82 minutes:
x + y = 82 .....(1)
The difference between grooming times for 20-to24-year old women and men is 20 minutes:
x - y = 28 .....(2)
Add equation 1 and 2.
x + y = 82
x - y = 28
2x = 110
x = 55
The average time of 20-to-24- year-old women is 55 min .
Put x = 55 in equation 1.
55 + y = 82
y = 27
The average time of men is 27 min.
Hence, 20-to-24- year-old women spend 55 minutes and men spend 27 minutes on grooming
